756 lines
21 KiB
C
756 lines
21 KiB
C
/******************************************************************************
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*
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* Module Name: dswload2 - Dispatcher second pass namespace load callbacks
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*
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*****************************************************************************/
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/*
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* Copyright (C) 2000 - 2014, Intel Corp.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions, and the following disclaimer,
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* without modification.
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* 2. Redistributions in binary form must reproduce at minimum a disclaimer
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* substantially similar to the "NO WARRANTY" disclaimer below
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* ("Disclaimer") and any redistribution must be conditioned upon
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* including a substantially similar Disclaimer requirement for further
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* binary redistribution.
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* 3. Neither the names of the above-listed copyright holders nor the names
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* of any contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* Alternatively, this software may be distributed under the terms of the
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* GNU General Public License ("GPL") version 2 as published by the Free
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* Software Foundation.
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*
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* NO WARRANTY
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "acpi.h"
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#include "accommon.h"
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#include "acparser.h"
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#include "amlcode.h"
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#include "acdispat.h"
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#include "acinterp.h"
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#include "acnamesp.h"
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#include "acevents.h"
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#define _COMPONENT ACPI_DISPATCHER
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ACPI_MODULE_NAME ("dswload2")
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsLoad2BeginOp
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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* OutOp - Wher to return op if a new one is created
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*
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* RETURN: Status
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*
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* DESCRIPTION: Descending callback used during the loading of ACPI tables.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsLoad2BeginOp (
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ACPI_WALK_STATE *WalkState,
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ACPI_PARSE_OBJECT **OutOp)
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{
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ACPI_PARSE_OBJECT *Op;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_STATUS Status;
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ACPI_OBJECT_TYPE ObjectType;
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char *BufferPtr;
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UINT32 Flags;
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ACPI_FUNCTION_TRACE (DsLoad2BeginOp);
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Op = WalkState->Op;
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Op=%p State=%p\n", Op, WalkState));
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if (Op)
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{
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if ((WalkState->ControlState) &&
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(WalkState->ControlState->Common.State ==
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ACPI_CONTROL_CONDITIONAL_EXECUTING))
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{
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/* We are executing a while loop outside of a method */
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Status = AcpiDsExecBeginOp (WalkState, OutOp);
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return_ACPI_STATUS (Status);
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}
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/* We only care about Namespace opcodes here */
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if ((!(WalkState->OpInfo->Flags & AML_NSOPCODE) &&
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(WalkState->Opcode != AML_INT_NAMEPATH_OP)) ||
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(!(WalkState->OpInfo->Flags & AML_NAMED)))
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{
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return_ACPI_STATUS (AE_OK);
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}
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/* Get the name we are going to enter or lookup in the namespace */
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if (WalkState->Opcode == AML_INT_NAMEPATH_OP)
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{
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/* For Namepath op, get the path string */
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BufferPtr = Op->Common.Value.String;
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if (!BufferPtr)
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{
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/* No name, just exit */
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return_ACPI_STATUS (AE_OK);
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}
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}
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else
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{
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/* Get name from the op */
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BufferPtr = ACPI_CAST_PTR (char, &Op->Named.Name);
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}
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}
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else
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{
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/* Get the namestring from the raw AML */
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BufferPtr = AcpiPsGetNextNamestring (&WalkState->ParserState);
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}
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/* Map the opcode into an internal object type */
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ObjectType = WalkState->OpInfo->ObjectType;
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"State=%p Op=%p Type=%X\n", WalkState, Op, ObjectType));
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switch (WalkState->Opcode)
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{
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case AML_FIELD_OP:
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case AML_BANK_FIELD_OP:
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case AML_INDEX_FIELD_OP:
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Node = NULL;
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Status = AE_OK;
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break;
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case AML_INT_NAMEPATH_OP:
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/*
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* The NamePath is an object reference to an existing object.
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* Don't enter the name into the namespace, but look it up
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* for use later.
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*/
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Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
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ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
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WalkState, &(Node));
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break;
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case AML_SCOPE_OP:
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/* Special case for Scope(\) -> refers to the Root node */
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if (Op && (Op->Named.Node == AcpiGbl_RootNode))
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{
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Node = Op->Named.Node;
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Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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else
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{
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/*
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* The Path is an object reference to an existing object.
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* Don't enter the name into the namespace, but look it up
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* for use later.
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*/
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Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
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ACPI_IMODE_EXECUTE, ACPI_NS_SEARCH_PARENT,
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WalkState, &(Node));
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if (ACPI_FAILURE (Status))
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{
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#ifdef ACPI_ASL_COMPILER
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if (Status == AE_NOT_FOUND)
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{
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Status = AE_OK;
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}
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else
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{
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ACPI_ERROR_NAMESPACE (BufferPtr, Status);
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}
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#else
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ACPI_ERROR_NAMESPACE (BufferPtr, Status);
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#endif
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return_ACPI_STATUS (Status);
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}
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}
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/*
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* We must check to make sure that the target is
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* one of the opcodes that actually opens a scope
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*/
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switch (Node->Type)
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{
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case ACPI_TYPE_ANY:
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case ACPI_TYPE_LOCAL_SCOPE: /* Scope */
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case ACPI_TYPE_DEVICE:
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case ACPI_TYPE_POWER:
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case ACPI_TYPE_PROCESSOR:
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case ACPI_TYPE_THERMAL:
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/* These are acceptable types */
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break;
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case ACPI_TYPE_INTEGER:
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case ACPI_TYPE_STRING:
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case ACPI_TYPE_BUFFER:
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/*
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* These types we will allow, but we will change the type.
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* This enables some existing code of the form:
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*
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* Name (DEB, 0)
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* Scope (DEB) { ... }
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*/
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ACPI_WARNING ((AE_INFO,
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"Type override - [%4.4s] had invalid type (%s) "
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"for Scope operator, changed to type ANY",
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AcpiUtGetNodeName (Node), AcpiUtGetTypeName (Node->Type)));
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Node->Type = ACPI_TYPE_ANY;
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WalkState->ScopeInfo->Common.Value = ACPI_TYPE_ANY;
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break;
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case ACPI_TYPE_METHOD:
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/*
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* Allow scope change to root during execution of module-level
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* code. Root is typed METHOD during this time.
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*/
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if ((Node == AcpiGbl_RootNode) &&
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(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
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{
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break;
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}
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/*lint -fallthrough */
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default:
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/* All other types are an error */
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ACPI_ERROR ((AE_INFO,
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"Invalid type (%s) for target of "
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"Scope operator [%4.4s] (Cannot override)",
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AcpiUtGetTypeName (Node->Type), AcpiUtGetNodeName (Node)));
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return_ACPI_STATUS (AE_AML_OPERAND_TYPE);
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}
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break;
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default:
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/* All other opcodes */
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if (Op && Op->Common.Node)
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{
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/* This op/node was previously entered into the namespace */
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Node = Op->Common.Node;
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if (AcpiNsOpensScope (ObjectType))
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{
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Status = AcpiDsScopeStackPush (Node, ObjectType, WalkState);
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if (ACPI_FAILURE (Status))
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{
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return_ACPI_STATUS (Status);
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}
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}
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return_ACPI_STATUS (AE_OK);
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}
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/*
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* Enter the named type into the internal namespace. We enter the name
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* as we go downward in the parse tree. Any necessary subobjects that
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* involve arguments to the opcode must be created as we go back up the
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* parse tree later.
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*
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* Note: Name may already exist if we are executing a deferred opcode.
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*/
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if (WalkState->DeferredNode)
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{
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/* This name is already in the namespace, get the node */
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Node = WalkState->DeferredNode;
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Status = AE_OK;
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break;
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}
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Flags = ACPI_NS_NO_UPSEARCH;
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if (WalkState->PassNumber == ACPI_IMODE_EXECUTE)
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{
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/* Execution mode, node cannot already exist, node is temporary */
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Flags |= ACPI_NS_ERROR_IF_FOUND;
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if (!(WalkState->ParseFlags & ACPI_PARSE_MODULE_LEVEL))
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{
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Flags |= ACPI_NS_TEMPORARY;
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}
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}
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/* Add new entry or lookup existing entry */
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Status = AcpiNsLookup (WalkState->ScopeInfo, BufferPtr, ObjectType,
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ACPI_IMODE_LOAD_PASS2, Flags, WalkState, &Node);
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if (ACPI_SUCCESS (Status) && (Flags & ACPI_NS_TEMPORARY))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"***New Node [%4.4s] %p is temporary\n",
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AcpiUtGetNodeName (Node), Node));
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}
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break;
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}
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if (ACPI_FAILURE (Status))
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{
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ACPI_ERROR_NAMESPACE (BufferPtr, Status);
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return_ACPI_STATUS (Status);
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}
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if (!Op)
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{
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/* Create a new op */
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Op = AcpiPsAllocOp (WalkState->Opcode);
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if (!Op)
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{
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return_ACPI_STATUS (AE_NO_MEMORY);
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}
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/* Initialize the new op */
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if (Node)
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{
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Op->Named.Name = Node->Name.Integer;
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}
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*OutOp = Op;
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}
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/*
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* Put the Node in the "op" object that the parser uses, so we
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* can get it again quickly when this scope is closed
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*/
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Op->Common.Node = Node;
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return_ACPI_STATUS (Status);
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}
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/*******************************************************************************
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*
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* FUNCTION: AcpiDsLoad2EndOp
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*
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* PARAMETERS: WalkState - Current state of the parse tree walk
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*
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* RETURN: Status
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*
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* DESCRIPTION: Ascending callback used during the loading of the namespace,
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* both control methods and everything else.
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*
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******************************************************************************/
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ACPI_STATUS
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AcpiDsLoad2EndOp (
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ACPI_WALK_STATE *WalkState)
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{
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ACPI_PARSE_OBJECT *Op;
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ACPI_STATUS Status = AE_OK;
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ACPI_OBJECT_TYPE ObjectType;
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ACPI_NAMESPACE_NODE *Node;
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ACPI_PARSE_OBJECT *Arg;
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ACPI_NAMESPACE_NODE *NewNode;
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#ifndef ACPI_NO_METHOD_EXECUTION
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UINT32 i;
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UINT8 RegionSpace;
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#endif
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ACPI_FUNCTION_TRACE (DsLoad2EndOp);
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Op = WalkState->Op;
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "Opcode [%s] Op %p State %p\n",
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WalkState->OpInfo->Name, Op, WalkState));
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/* Check if opcode had an associated namespace object */
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if (!(WalkState->OpInfo->Flags & AML_NSOBJECT))
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{
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return_ACPI_STATUS (AE_OK);
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}
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if (Op->Common.AmlOpcode == AML_SCOPE_OP)
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"Ending scope Op=%p State=%p\n", Op, WalkState));
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}
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ObjectType = WalkState->OpInfo->ObjectType;
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/*
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* Get the Node/name from the earlier lookup
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* (It was saved in the *op structure)
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*/
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Node = Op->Common.Node;
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/*
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* Put the Node on the object stack (Contains the ACPI Name of
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* this object)
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*/
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WalkState->Operands[0] = (void *) Node;
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WalkState->NumOperands = 1;
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/* Pop the scope stack */
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if (AcpiNsOpensScope (ObjectType) &&
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(Op->Common.AmlOpcode != AML_INT_METHODCALL_OP))
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{
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH, "(%s) Popping scope for Op %p\n",
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AcpiUtGetTypeName (ObjectType), Op));
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Status = AcpiDsScopeStackPop (WalkState);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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}
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/*
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* Named operations are as follows:
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*
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* AML_ALIAS
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* AML_BANKFIELD
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* AML_CREATEBITFIELD
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* AML_CREATEBYTEFIELD
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* AML_CREATEDWORDFIELD
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* AML_CREATEFIELD
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* AML_CREATEQWORDFIELD
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* AML_CREATEWORDFIELD
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* AML_DATA_REGION
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* AML_DEVICE
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* AML_EVENT
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* AML_FIELD
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* AML_INDEXFIELD
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* AML_METHOD
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* AML_METHODCALL
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* AML_MUTEX
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* AML_NAME
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* AML_NAMEDFIELD
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* AML_OPREGION
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* AML_POWERRES
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* AML_PROCESSOR
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* AML_SCOPE
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* AML_THERMALZONE
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*/
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ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
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"Create-Load [%s] State=%p Op=%p NamedObj=%p\n",
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AcpiPsGetOpcodeName (Op->Common.AmlOpcode), WalkState, Op, Node));
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/* Decode the opcode */
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Arg = Op->Common.Value.Arg;
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switch (WalkState->OpInfo->Type)
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{
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#ifndef ACPI_NO_METHOD_EXECUTION
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case AML_TYPE_CREATE_FIELD:
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/*
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* Create the field object, but the field buffer and index must
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* be evaluated later during the execution phase
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*/
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Status = AcpiDsCreateBufferField (Op, WalkState);
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break;
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case AML_TYPE_NAMED_FIELD:
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/*
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* If we are executing a method, initialize the field
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*/
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if (WalkState->MethodNode)
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{
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Status = AcpiDsInitFieldObjects (Op, WalkState);
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}
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switch (Op->Common.AmlOpcode)
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{
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case AML_INDEX_FIELD_OP:
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Status = AcpiDsCreateIndexField (Op, (ACPI_HANDLE) Arg->Common.Node,
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WalkState);
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break;
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case AML_BANK_FIELD_OP:
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Status = AcpiDsCreateBankField (Op, Arg->Common.Node, WalkState);
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break;
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case AML_FIELD_OP:
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Status = AcpiDsCreateField (Op, Arg->Common.Node, WalkState);
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break;
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default:
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/* All NAMED_FIELD opcodes must be handled above */
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break;
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}
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break;
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case AML_TYPE_NAMED_SIMPLE:
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Status = AcpiDsCreateOperands (WalkState, Arg);
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if (ACPI_FAILURE (Status))
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{
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goto Cleanup;
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}
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switch (Op->Common.AmlOpcode)
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{
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case AML_PROCESSOR_OP:
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Status = AcpiExCreateProcessor (WalkState);
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break;
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case AML_POWER_RES_OP:
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Status = AcpiExCreatePowerResource (WalkState);
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break;
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case AML_MUTEX_OP:
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Status = AcpiExCreateMutex (WalkState);
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break;
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case AML_EVENT_OP:
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Status = AcpiExCreateEvent (WalkState);
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break;
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case AML_ALIAS_OP:
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Status = AcpiExCreateAlias (WalkState);
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break;
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default:
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/* Unknown opcode */
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Status = AE_OK;
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goto Cleanup;
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}
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/* Delete operands */
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for (i = 1; i < WalkState->NumOperands; i++)
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{
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AcpiUtRemoveReference (WalkState->Operands[i]);
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WalkState->Operands[i] = NULL;
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}
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break;
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#endif /* ACPI_NO_METHOD_EXECUTION */
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case AML_TYPE_NAMED_COMPLEX:
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switch (Op->Common.AmlOpcode)
|
|
{
|
|
#ifndef ACPI_NO_METHOD_EXECUTION
|
|
case AML_REGION_OP:
|
|
case AML_DATA_REGION_OP:
|
|
|
|
if (Op->Common.AmlOpcode == AML_REGION_OP)
|
|
{
|
|
RegionSpace = (ACPI_ADR_SPACE_TYPE)
|
|
((Op->Common.Value.Arg)->Common.Value.Integer);
|
|
}
|
|
else
|
|
{
|
|
RegionSpace = ACPI_ADR_SPACE_DATA_TABLE;
|
|
}
|
|
|
|
/*
|
|
* The OpRegion is not fully parsed at this time. The only valid
|
|
* argument is the SpaceId. (We must save the address of the
|
|
* AML of the address and length operands)
|
|
*
|
|
* If we have a valid region, initialize it. The namespace is
|
|
* unlocked at this point.
|
|
*
|
|
* Need to unlock interpreter if it is locked (if we are running
|
|
* a control method), in order to allow _REG methods to be run
|
|
* during AcpiEvInitializeRegion.
|
|
*/
|
|
if (WalkState->MethodNode)
|
|
{
|
|
/*
|
|
* Executing a method: initialize the region and unlock
|
|
* the interpreter
|
|
*/
|
|
Status = AcpiExCreateRegion (Op->Named.Data, Op->Named.Length,
|
|
RegionSpace, WalkState);
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
|
|
AcpiExExitInterpreter ();
|
|
}
|
|
|
|
Status = AcpiEvInitializeRegion (AcpiNsGetAttachedObject (Node),
|
|
FALSE);
|
|
if (WalkState->MethodNode)
|
|
{
|
|
AcpiExEnterInterpreter ();
|
|
}
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
/*
|
|
* If AE_NOT_EXIST is returned, it is not fatal
|
|
* because many regions get created before a handler
|
|
* is installed for said region.
|
|
*/
|
|
if (AE_NOT_EXIST == Status)
|
|
{
|
|
Status = AE_OK;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case AML_NAME_OP:
|
|
|
|
Status = AcpiDsCreateNode (WalkState, Node, Op);
|
|
break;
|
|
|
|
case AML_METHOD_OP:
|
|
/*
|
|
* MethodOp PkgLength NameString MethodFlags TermList
|
|
*
|
|
* Note: We must create the method node/object pair as soon as we
|
|
* see the method declaration. This allows later pass1 parsing
|
|
* of invocations of the method (need to know the number of
|
|
* arguments.)
|
|
*/
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"LOADING-Method: State=%p Op=%p NamedObj=%p\n",
|
|
WalkState, Op, Op->Named.Node));
|
|
|
|
if (!AcpiNsGetAttachedObject (Op->Named.Node))
|
|
{
|
|
WalkState->Operands[0] = ACPI_CAST_PTR (void, Op->Named.Node);
|
|
WalkState->NumOperands = 1;
|
|
|
|
Status = AcpiDsCreateOperands (WalkState, Op->Common.Value.Arg);
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
Status = AcpiExCreateMethod (Op->Named.Data,
|
|
Op->Named.Length, WalkState);
|
|
}
|
|
WalkState->Operands[0] = NULL;
|
|
WalkState->NumOperands = 0;
|
|
|
|
if (ACPI_FAILURE (Status))
|
|
{
|
|
return_ACPI_STATUS (Status);
|
|
}
|
|
}
|
|
break;
|
|
|
|
#endif /* ACPI_NO_METHOD_EXECUTION */
|
|
|
|
default:
|
|
|
|
/* All NAMED_COMPLEX opcodes must be handled above */
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case AML_CLASS_INTERNAL:
|
|
|
|
/* case AML_INT_NAMEPATH_OP: */
|
|
break;
|
|
|
|
case AML_CLASS_METHOD_CALL:
|
|
|
|
ACPI_DEBUG_PRINT ((ACPI_DB_DISPATCH,
|
|
"RESOLVING-MethodCall: State=%p Op=%p NamedObj=%p\n",
|
|
WalkState, Op, Node));
|
|
|
|
/*
|
|
* Lookup the method name and save the Node
|
|
*/
|
|
Status = AcpiNsLookup (WalkState->ScopeInfo, Arg->Common.Value.String,
|
|
ACPI_TYPE_ANY, ACPI_IMODE_LOAD_PASS2,
|
|
ACPI_NS_SEARCH_PARENT | ACPI_NS_DONT_OPEN_SCOPE,
|
|
WalkState, &(NewNode));
|
|
if (ACPI_SUCCESS (Status))
|
|
{
|
|
/*
|
|
* Make sure that what we found is indeed a method
|
|
* We didn't search for a method on purpose, to see if the name
|
|
* would resolve
|
|
*/
|
|
if (NewNode->Type != ACPI_TYPE_METHOD)
|
|
{
|
|
Status = AE_AML_OPERAND_TYPE;
|
|
}
|
|
|
|
/* We could put the returned object (Node) on the object stack for
|
|
* later, but for now, we will put it in the "op" object that the
|
|
* parser uses, so we can get it again at the end of this scope
|
|
*/
|
|
Op->Common.Node = NewNode;
|
|
}
|
|
else
|
|
{
|
|
ACPI_ERROR_NAMESPACE (Arg->Common.Value.String, Status);
|
|
}
|
|
break;
|
|
|
|
|
|
default:
|
|
|
|
break;
|
|
}
|
|
|
|
Cleanup:
|
|
|
|
/* Remove the Node pushed at the very beginning */
|
|
|
|
WalkState->Operands[0] = NULL;
|
|
WalkState->NumOperands = 0;
|
|
return_ACPI_STATUS (Status);
|
|
}
|